1 files changed, 7 insertions, 1 deletions
diff --git a/lib/sqlalchemy/sql/cache_key.py b/lib/sqlalchemy/sql/cache_key.py
index 15fbc2afb..c16fbdae1 100644
--- a/lib/sqlalchemy/sql/cache_key.py
+++ b/lib/sqlalchemy/sql/cache_key.py
@@ -36,7 +36,6 @@ if typing.TYPE_CHECKING:
     from .elements import BindParameter
     from .elements import ClauseElement
     from .visitors import _TraverseInternalsType
-    from ..engine.base import _CompiledCacheType
     from ..engine.interfaces import _CoreSingleExecuteParams
 
 
@@ -393,6 +392,13 @@ class MemoizedHasCacheKey(HasCacheKey, HasMemoized):
         return HasCacheKey._generate_cache_key(self)
 
 
+class SlotsMemoizedHasCacheKey(HasCacheKey, util.MemoizedSlots):
+    __slots__ = ()
+
+    def _memoized_method__generate_cache_key(self) -> Optional[CacheKey]:
+        return HasCacheKey._generate_cache_key(self)
+
+
 class CacheKey(NamedTuple):
     """The key used to identify a SQL statement construct in the
     SQL compilation cache.